Warp stop-motion for looms.



f' ILA. OWEN. .O

WARP STOP MOTION FOR4 LOOMs. Y

PPLIOAOIIONHILED IAYpIOOl.

' nO MODEL.

NQ. 729,960. I y I1 AtrmmnJUNE2,1993. i f

l l H. A.^OWEN'.- f WARPVSTOP' MOTION FOR LOOMs.

, APPLICATION `IIL}D MAY 8. 1901. l l 4- No MODEL. A z SHEETS-SHEET 2'.,

WIINEES- f ff a WHITINf MACHINE CHUSETTS.

D SAES] ATENE Patented June 2, 1903.

lHENRYA. OWEN, OE WHITiNfsvILLE, MASSACHUSETTS, Assis-NOR TOTHE WORKS, INCORPORATED, OF wHITINsvILLE, MASSA- wARP-'sToP-M OTION FOR oo'|v|.si.`

SPECIFICATION forming part of Letters Patent No. 729,960, dated June 2, 1903.'

Application filed May 8, 1901. Serial No. 59,262. (No model.)

To @ZZ whom/ t may concern:

Be it known that I, HENRY A. OWEN, a citizen of the United States, residing at Whitnsville, in the county of Worcester and State of Massachusetts, have invented a new and useful Improvement in Warp Stop-Motions for Looms, of which the following is a specification.

This invention has reference to an improvement in the class of automatic loom stop mechanism in which detector-plates are supported by-the warp-threads above a series of saw-tooth plates, to one or more of which is imparted a reciprocating motion transversely to the Warp-threads.

The invention consists in the peculiar and l novel construction of the mechanism and the combination of the parts whereby the recipf rocating blades are operated and the loom is Stopped, as will be more fully set forth hereinafter.

Figure lis anend view Of such parts of a loom as areV required to illustrate the inveng Fig. 2 is a View of the end frames and parts of the loom, illustrating the invention. 1 Fig. 3 is a top view ef the saw-blade stop-1` motion. In Figs. 2 and 3 the central portions :are omitted for the purpose of reducing the size of the drawings and showing the essential parts on a large-r scale.

Similar marks of referencer-indicate -correfsponding parts in -allfthe figures.

In the drawings, A-indicates the end frames thread breaks, the detector-plate suspended on the same drops on the saw-blades and locks the reciprocating saw-blade against movement in one direction.

To one end of the saw-blade d or in the preferred form to the bars d20, connecting the ends of the saw-blades d 61,1 secure a Wire, rope, cord, or chain d3 and passing the same over the sheave d4 secure the other end to one end of the coiled tension-spring d5, the other end of which is secured to the end frame A. In place of the coiled tensionspring d5 a weight may be usedfif desired. To the Opposite vend ofthe saw-'bladesd d or in the preferred form to the bar C221 the'rope d3@ is secured and passed over a' sheave d, from which it passes downward over the sheave d6 to the lever dl, to which itis secured. The lever di' is pivoted On the sword Z9 near the lay and forms, with the overweighted pawl d8, a bell-crank lever pivoted on the laysword b. The stop di on the lower part of the lay-sword holds the lever d'7 against the strain exerted by the tension-spring d5 on the saw-blades d d and the ropes d3 (130; Y

The stop-rod d is supported at the front end on a stud-d@l5 or other support, on which it may slide,and is connected with the usual shipperlever a. The stop-rod may, however, connect with any other mechanism by which the loom may be stopped. The stop-rod dlourests "nearits innerend on the support dfn, on which it-may slide. A shoulder dw on the stop-rod dw is placed so that when the lay approaches the end of its rearward oscillation the pawl d? may engage Twith the shoulder and move the stop-rod backward tooperate the arm a to disengage the'spring shipper-lever or opyerate'a stop or.` knock-off motion' to Stop the loom.

' During 'the normal operation of the loom the swing of the lay and the lay-sword causes the stop d to carry the lower end of the lever Z7 forward. This movement is transmitted by the rope d3 to the saw-blades d d and eX- erts a strain on the tension-springd5 or, if desired, on a weight. On the-backwardjmovement of the lay the tension` spring or weight, acting on the rope d3 and the'saw-blades d d,

holds the lower end-'of the lever 17 against the stop di. When now a Warp-thread breaks and one of the detector-plates d2 drops on a set of the saw-blades during the forward movement of the lay, the saw-blade d, the teeth of which are beveled in the opposite direction to the teeth of the fixed saw-blades d d', is drawn forward, the ydetector-plate riding on the bevels of the teeth until the saw-blade cl has been drawn fully forward by the movement of the lay. As soon as the lay commences to swing backward the tension-spring d5 draws the saw-blade d backward. rlhe detector-plate enters between the vertical edges of the xed saw-blades d d and the vertical edges of a tooth on the saw-blade d, thereby locking the same and releasing the tension on the rope or cord connecting the saw-blades d d with the lever (I7. The weighted pawl d8 now acts to swing the lever into the position shown in broken lines in Fig. l and engages with the shoulder on the stop-rod d10. Drawing the same backward it acts on the mechanism to release the spring shipper-lever and stop the loom.

The warp stop-motion and operating mechanism may be readily attached to any existing loom.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. In a warp stop-motion for looms,two fixed members, a reciprocating member, means for moving the reciprocating member in one direction, a lever provided with an overbalanced pawl carried by the lay, flexible connection between the lever and the reciprocating member for moving the member iu the opposite direction,a detector-plate,and means engaged by the pawl for knocking off the loom when Vthe detector-plate arrests the reciprocating member, as described.

2. In a warp stop-motion l'orlooms, the combination with detector-plates supported on the warp-threads, the fixed saw-blades and a reciprocating saw-blade, of a tension-spring connected with one eud of the reciprocating saw-blade, a iiexible connection extending from the other end of the reciprocating sawblade to an overweighted bell-crank lever pivotally supported on the lay, the bell-crank lever, a stop for the lever and astop-rod connected with the stop mechanism and provided with a shoulder, as described.

3. In a Warp stop-motion forlooms, the combination with the stop-rod d10 and the lay, of the fixed saw-blades cli d', the saw-blade (l, means for reciprocating the saw-blade d in one direction, the lever d?, the overweighted pawl ds, the stop Z9 on the sword, detectorplates supported on the warp-threads, and the iiexible connection between the lever di and the saw-blade d; whereby on the breaking of a warp-thread the pawl engages with the stop-rod to stop the loom, as described.

4E. In a warp stop-motion for looms, the lixed saw-blades, a reciprocating saw-blade, detector-plates, an overweighted pawl pivotally secured to a part of the lay, the lay, a tension-spring, flexible connection between thespring and one end of the reciprocating sawblade, flexible connections between the other end of the reciprocating saw-blade and the pawl, and a stop-rod; whereby on the breaking ot' a warp-thread the pawl engages with the stop-rod to stop the loom, as described.

5. In a warp stop-motion, the combination with the lay, the loom stop mechanism, the reciprocating member, the fixed member, and the detectors, of the overweighted pawl d, the lever nl?, and the stop (Z9, supported on the lay, and a fiexible connection between the lever (Z7 and the reciprocating member,

Vwhereby the pawl is controlled, as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY A. OWEN.

Witnesses B. M. Sums, J. A. MILLER, Jr. 

